Introduction: Three Audio Amplifier Circuits || Step-by-Step Tutorial
Audio Amplifier Circuit can amplify audio signals coming from mobile, laptop or any other electronic devise on connecting through AUX cable.
Here, I will show you three different ways to make this Audio Amplifier Circuit using :
1. Single Transistor
2. Two Transistors
3. LM 386 IC
Step 1: Components Required
These are the Components Required for making the circuit :
1. Using Single Transistor
• Transistors: BC 547
• Resistor: 10 K Ω
• Capacitor: 100 μF
• AUX cable
• Speaker
2. Using Two Transistors
• Transistors: BC 547 (2)
• Resistors: 10K Ω
• Capacitors: 470 μF, 100nF (0.1μF)
• AUX cable
• Speaker
3. Using LM 386 IC
• LM 386 IC
• Resistor: 10K Ω
• Capacitors: 220 μF, 100 nF (0.1 μF)
• AUX cable
• Speaker
Other Requirements :
• Battery: 4.5V
• Breadboard
• Breadboard Connectors
Step 2: Circuit Diagrams
These are the Circuit Diagrams for making the circuit using :
- Single Transistor
- Two Transistors
- LM 386 IC
Step 3: Step-by-Step Tutorial
This video shows step-by-step, how to build all these circuits.